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November 26, 2020, 05:56:42 am

Author Topic: VCE Methods Question Thread!  (Read 3074430 times)  Share 

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p0kem0n21

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Re: VCE Methods Question Thread!
« Reply #18765 on: September 07, 2020, 09:32:03 am »
0
haha nah im not scared, it's just that we have a ti-nspire assignment (im in year 10) and one of the things asked of us to do is to convert slope-intercept to standard form but...... i guess i can pretend i used cas xD
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TheEagle

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Re: VCE Methods Question Thread!
« Reply #18766 on: September 08, 2020, 01:00:18 am »
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Anyone know if continuous random variables are still in the course or not (i.e ch 15 of Cambridge)?

The Cat In The Hat

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Re: VCE Methods Question Thread!
« Reply #18767 on: September 08, 2020, 09:08:53 am »
+1
What's in the 2020 probability curriculum: 13AB, Ch 14, Ch 16, understanding of the importance of shape (positive and negative skew & symmetry), centre (mean = µ = average = long term expected value), spread (std dev = √var = sigma)

So, no.
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Umar but with O

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Re: VCE Methods Question Thread!
« Reply #18768 on: September 08, 2020, 02:53:08 pm »
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Is the study of matrices in units 1/2 required for units 3/4 (methods)?

Sine

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Re: VCE Methods Question Thread!
« Reply #18769 on: September 08, 2020, 03:07:27 pm »
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Is the study of matrices in units 1/2 required for units 3/4 (methods)?
I think most schools go into matrices in more depth in units 1/2 than what is actually required for 3/4.

For 3/4 the importance of matrices lie with transformations however it is probably safer to revise addition/mutiplication/inverse of matrices as well.

eloisegrace

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Re: VCE Methods Question Thread!
« Reply #18770 on: September 08, 2020, 03:13:45 pm »
+1
Anyone know if continuous random variables are still in the course or not (i.e ch 15 of Cambridge)?
Nope, only discrete, binomial and normal variables. No stats either
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The Cat In The Hat

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Re: VCE Methods Question Thread!
« Reply #18771 on: September 08, 2020, 04:43:45 pm »
+1
Hi Guys,

Could someone please help me with the attached questions, im so clueless with how to do them.

Cheers
Hi and welcome to AN! Could you please put the question/s up in full? All I see is a short sentence and no context.
VCE 2018-2020
2019: HHD 3/4 (31->?)
2020: Methods 3/4 (30?->?) | Revs (France/Russia) 3/4 (32?->?) | English 3/4 (40+?->?) | T&T 3/4 (35?->?)
Aiming 85+ ATAR (was 92+ at the start of the year :'()
Aims
-BNursing/BMidwifery @ Deakin
-Write/publish books (thanks NaNoWriMo.org!)
Exams
English 😀
Revs 😐
MME1 🙂
MME2 🙂
Texts - 26/11
ATAR - 30/12
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~English - happy to assist anyone for P&P - PM me!~

The Cat In The Hat

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Re: VCE Methods Question Thread!
« Reply #18772 on: September 08, 2020, 05:22:51 pm »
0
Since we have no idea about what programs these are, they cannot be answered. Could you put in the entire question please?
VCE 2018-2020
2019: HHD 3/4 (31->?)
2020: Methods 3/4 (30?->?) | Revs (France/Russia) 3/4 (32?->?) | English 3/4 (40+?->?) | T&T 3/4 (35?->?)
Aiming 85+ ATAR (was 92+ at the start of the year :'()
Aims
-BNursing/BMidwifery @ Deakin
-Write/publish books (thanks NaNoWriMo.org!)
Exams
English 😀
Revs 😐
MME1 🙂
MME2 🙂
Texts - 26/11
ATAR - 30/12
Uni offers - 14/1
~English - happy to assist anyone for P&P - PM me!~

The Cat In The Hat

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Re: VCE Methods Question Thread!
« Reply #18773 on: September 08, 2020, 05:47:33 pm »
0
Quote
The probability that a new puppy qualifies for the scent training program is 1/3 and the probability that it qualifies for the guide dog program is 1/4.
g) If a puppy cannot qualify for both programs, what is the mathematical term that represents this situation?
It can qualify for one or the other, so they are mutually exclusive.
VCE 2018-2020
2019: HHD 3/4 (31->?)
2020: Methods 3/4 (30?->?) | Revs (France/Russia) 3/4 (32?->?) | English 3/4 (40+?->?) | T&T 3/4 (35?->?)
Aiming 85+ ATAR (was 92+ at the start of the year :'()
Aims
-BNursing/BMidwifery @ Deakin
-Write/publish books (thanks NaNoWriMo.org!)
Exams
English 😀
Revs 😐
MME1 🙂
MME2 🙂
Texts - 26/11
ATAR - 30/12
Uni offers - 14/1
~English - happy to assist anyone for P&P - PM me!~

Sine

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Re: VCE Methods Question Thread!
« Reply #18774 on: September 14, 2020, 04:00:50 pm »
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Hi Guys,

Was wondering if anyone would please show me how to do this question and provide solutions.

Thanks in advance!
What aspect of the question are you having difficulty with? What have you tried so far?

Also, please try to refrain from double posting in the future.

Sine

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Re: VCE Methods Question Thread!
« Reply #18775 on: September 14, 2020, 05:01:52 pm »
+3
The whole question, i am very unsure. My methods skills are pretty bad. Thanks so much for your time Sine.
Alright, I'll start with your first post and try to put you on track.

The questions says the time to complete the workout is normally distributed with a mean of 30 minutes and a standard deviation of 2 minutes.

This should be a very clear sign that you need to define the random variable T.

So, T ~ N(30,22) or T ~ N(30, 4). Is this notation familiar?

If you want to find the probability that she takes less than 25 minutes to finish her work out use the random variable T.

Pr(T < 25)
To solve this you convert it to a standard normal distribution with a mean of 0 and standard deviation of 1 (Z ~ (0,1))
Pr(T < 25) = Pr (Z < (25-30)/2)) = Pr(Z < -2.5)


rukayabal

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Re: VCE Methods Question Thread!
« Reply #18776 on: September 15, 2020, 01:44:27 pm »
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Hi all,
I would like to know whether combinatorics and permutations and all the factorial skills need to be known for the current study design as I am completely clueless about them. I saw a question in the 2019 nht exam 1 and seems incredibly complicated. Here it is. I have attached it.

I would really appreciate a reply.





« Last Edit: September 15, 2020, 01:46:10 pm by rukayabal »

S_R_K

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Re: VCE Methods Question Thread!
« Reply #18777 on: September 15, 2020, 01:48:15 pm »
+1
That exam question is from the current study design, so yes.

keltingmeith

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Re: VCE Methods Question Thread!
« Reply #18778 on: September 15, 2020, 02:03:17 pm »
+1
Hi all,
I would like to know whether combinatorics and permutations and all the factorial skills need to be known for the current study design as I am completely clueless about them. I saw a question in the 2019 nht exam 1 and seems incredibly complicated. Here it is. I have attached it.

I would really appreciate a reply.







Just adding on to what S_R_K has said - these questions also aren't too difficult, don't be scared just because they're technically in the realm of combinatorics. Remember - this is just a binomial distribution problem, all you need to do is apply the binomial distribution material as you were taught it in class.
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rukayabal

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Re: VCE Methods Question Thread!
« Reply #18779 on: September 15, 2020, 09:03:45 pm »
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That exam question is from the current study design, so yes.
Just adding on to what S_R_K has said - these questions also aren't too difficult, don't be scared just because they're technically in the realm of combinatorics. Remember - this is just a binomial distribution problem, all you need to do is apply the binomial distribution material as you were taught it in class.


Thank you  :)